Galerie mk2

[redakcja.git] / lib / wlrepo / __init__.py

diff --git a/lib/wlrepo/__init__.py b/lib/wlrepo/__init__.py
index 7e87898..9de75a0 100644 (file)
--- a/lib/wlrepo/__init__.py
+++ b/lib/wlrepo/__init__.py
@@ -18,7 +18,7 @@ class Library(object):
         """Retrieve a document in the specified revision."""
         pass
 
-    def document(self, docid, user=None):
+    def document(self, docid, user=None, rev='latest'):
         """Retrieve a document from a library."""
         pass
 
@@ -51,7 +51,7 @@ class Document(object):
         Should be called on the user version of document. If not, it doesn nothing."""
        
     def data(self, entry):
-        """Returns the specified entry as a file-like object."""
+        """Returns the specified entry as a unicode data."""
         pass
 
     @property
@@ -108,10 +108,25 @@ class LibraryException(Exception):
 class RevisionNotFound(LibraryException):
     def __init__(self, rev):
         LibraryException.__init__(self, "Revision %r not found." % rev)
-    pass
+
+class RevisionMismatch(LibraryException):
+    def __init__(self, fdi, rev):
+        LibraryException.__init__(self, "No revision %r for document %r." % (rev, fdi))
+    
+class EntryNotFound(LibraryException):
+    def __init__(self, rev, entry, guesses=[]):
+        LibraryException.__init__(self, \
+            u"Entry '%s' at revision %r not found. %s" % (entry, rev, \
+            (u"Posible values:\n" + u',\n'.join(guesses)) if len(guesses) else u'') )
 
 class DocumentAlreadyExists(LibraryException):
     pass
 
 # import backends to local namespace
-from mercurial_backend.library import MercurialLibrary
\ No newline at end of file
+
+def open_library(path, proto, *args, **kwargs):
+    if proto == 'hg':
+        import wlrepo.mercurial_backend
+        return wlrepo.mercurial_backend.MercurialLibrary(path, *args, **kwargs)
+
+    raise NotImplemented()
\ No newline at end of file